Preparing for 127 day

Yes, Monday is January (month 1) 27(th), so it is a 127 day! 127 film is difficult to come by now - Analogue Wonderland have some, and Nik + Trick also have some, including some films which they cut down and re-spool!

So, as all 3 of my old 127 cameras are empty, what film should I choose - colour or black and white, negative or transparency, which film speed, which film stock? One of the many advantages of digital is that we don't need to make these decisons beforehand, and can choose what we want at the time we take the photo or in PP for some options). I'll leave the decision until Monday morning, and it will depend on the weather!